As I posted above, the information available online for the Dell in question (XPS 8700) shows a 460W unit with two 6-pin PCIe connectors, 'daisy-chained' on a single PSU lead.

I actually found references to two different PSUs for Dell XPS8700: a Huntkey HU460AM and an AcBel AC460AM. Both have two 6-pin connectors 'daisy-chained' on a single PSU lead.

(As I mentioned, this assumes I've identified the PSU correctly, but I think it's accurate.)

Also, like I said above, there's a reasonable chance it would work (I think so TBH) but for all the technical reasons I cited, I don't feel it's the best choice, given the constraint the OP places on not requiring a PSU change.

Going from that 745, a 1060 6G is a huge upgrade, and there are many models that will safely work with the PSU as is. And - most likely because of the recent 1660 introduction - the 1060s prices are falling; lots of sales and rebates smile smile smile

Last edited by kksnowbear; 04/15/19 10:12 PM.